Thankyou RM Builder
 

I would like to thank Bob Madera aka RM Builder for specing the parts for my 540. I am really pleased. Dyno pull is with all accessories installed and blowing through Dana Marine Torque-flow exhaust.

Chris

I like the HP #'s from 4800 to 5900. that should pull some good #'s.Congrats , Bob is pretty sharp on designing a cam. He goes that extra info, unlike most cam manufactures,they usually don't ask much:(


Rob:ernaehrung004:

The numbers look really good. I would think, prop it for 5400-5500rpms at wot as the spinning it 400 rpms faster for 10 hp isn't worth it.

We were going for a very broad torque curve, and gave up some peak HP to gain it.

Chris

500 lbs of torque at 2500 rpm....awesome.

but what does the 400rpm do for speed,mine was gaing 10 hp per 100rpm from 5800-6100,I prop it to 6000 for top speed, the capibilty doesent mean you run it there .

Congrats!!! Those are some very respectable/impressive HP/TQ numbers with a "Manifold" style exhaust system!!!

CB...By the way, what size/brand of heads are you using? Also, was the engine dyno'd with or without sea pump, alternator, etc??? Was the exhaust system "wet" or "dry"? Just curious.

:cool-smiley-027:

Kamma,

AFR 305 CNC, Dana Torque-Flow exhaust - wet, vortex collector sized for 540, with sea pump, alternator, power steering pump, water pump. 9.6 compression, victor manifold, HVH 1 inch super sucker, 1050 Dominator, Jessel rockers, Morel lifters, Bob's cam.

Looking forward to putting it in the boat next week.

Chris